12212142 has 32 divisors (see below), whose sum is σ = 25090560. Its totient is φ = 3961440.

The previous prime is 12212141. The next prime is 12212143. The reversal of 12212142 is 24121221.

It is an interprime number because it is at equal distance from previous prime (12212141) and next prime (12212143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46303 + ... + 46565.

It is an arithmetic number, because the mean of its divisors is an integer number (784080).

Almost surely, 2^12212142 is an apocalyptic number.

12212142 is an abundant number, since it is smaller than the sum of its proper divisors (12878418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12212142 is a wasteful number, since it uses less digits than its factorization.

12212142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448.

The product of its digits is 64, while the sum is 15.

The square root of 12212142 is about 3494.5875293087. The cubic root of 12212142 is about 230.2840975815.

Adding to 12212142 its reverse (24121221), we get a palindrome (36333363).

The spelling of 12212142 in words is "twelve million, two hundred twelve thousand, one hundred forty-two".